The problem that follow involve straight-line motion. The time t is in seconds unless othe...

The problem that follow involve straight-line motion. The time t is in seconds unless otherwise stated.

Problem

At the instant shown, the coordinates of the collar A are x = 2.3 ft, y = 1.9 ft. The collar is sliding on the bar from B toward C at a constant speed of 4 ft/s.

(a) What is the velocity of the collar in terms of polar coordinates?

---

(b) Use the answer to part (a) to determine the angular velocity of the radial line from the origin to the collar A at the instant shown.